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If handed a file pointer we can't write to, set errno properly to EBADF

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in order to get SUSv2 conformant behavior in higher level calls like
fputs() and puts().

Reviewed by:	bde
This commit is contained in:
jkh 2004-03-02 19:43:51 +00:00
parent 26048a44af
commit 5a199c908b
1 changed files with 4 additions and 1 deletions
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5
lib/libc/stdio/fvwrite.c
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@ -40,6 +40,7 @@ static char sccsid[] = "@(#)fvwrite.c 8.1 (Berkeley) 6/4/93";
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -67,8 +68,10 @@ __sfvwrite(fp, uio)
if ((len = uio->uio_resid) == 0)
return (0);
/* make sure we can write */
if (cantwrite(fp))
if (cantwrite(fp)) {
errno = EBADF;
return (EOF);
}
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define COPY(n) (void)memcpy((void *)fp->_p, (void *)p, (size_t)(n))